A hanging mass of 23 kg will exert a force of:
23 * 9.81 = 225.6 Newtons on the string
Thus, during rotation, the force exerted should remain less than this. Force on an object in circular motion is given by:
F = (m * v^2) / r
225.6 = (2.95 * v^2) / 0.791
v = sqrt(60.491)
v = 7.78 m/s
Thus, the magnitude of the velocity should not exceed 7.78 meters per second.
Answer:
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Explanation:
An object that is partly, or completely, submerged experiences a greater pressure on its bottom surface than on its top surface. This causes a resultant force upwards. This force is called upthrust . The upthrust force is equal in size to the weight of the fluid displaced by the object.
Buoyancy or upthrust, is an upward force exerted by a fluid that opposes the weight of an immersed object.It is the force that pushes an object up. The upthrust, or buoyancy, keeps ships afloat. The upthrust, or buoyancy, keeps swimmers on top of the water.
Answer: The spinning of Earth's outer core causes the lithosphere to break into individual plates and collide with each other.
Earth's surface forms because of this reason:
The spinning of Earth's outer core causes the lithosphere to break into individual plates and collide with each other.
It will float because the density is less than 1
Answer:
Part a)
Part b)
Part c)
Part d)
Part e)
Part f)
Part g)
Part h)
Explanation:
Part a)
Torque due to F1 force is given as
Part b)
Torque due to F2 force is given as
Part c)
Torque due to F3 force is given as
Part d)
Net torque along x direction is given as
Part e)
Net torque along y direction is given as
Part f)
Net torque along x direction is given as
Part g)
angular acceleration is given as
now we have
Part h)
angular speed of the disc after 1.5 s
now rotational kinetic energy is given as